MOESSBAUER STUDY OF THE FORMATION OF SOLID SOLUTIONS IN THE″ALPHA″ -FE2O3-AL2O3 SYSTEM.

Article abstract of DOI:10.1002/pssa.2210730132

THE FORMATION OF SOLID SOLUTIONS 80 TO 950 D. C WAS STUDIEDBY MOESSBAUER SPECTROSCOPY, DTA, AND SPECIFIC SURFACE AREA MEASUREMENTS. IN THE MOESSBAUER SPECTRUM, A DOUBLET IS OBSERVED UP TO ABOUT 330 D. C. AT HIGHER TEMPERATURES, A TRANSITION TO A DIX-LINE SPECTRUM IS OBSERVED. THE TEMPERATURE OF THIS TRANSITION INCREASES WITH INCREASING AL//2O//3 CONTENT. THE SOLUBILITY LIMIT OF AL//2O//3 IN ″ALPHA″ -FE//2O//3 WAS DETERMINED BY MEASUREMENTS OF THE EFFECTIVE INTERNAL MAGNETICFIELD VALUES IS ″APPROXIMATELY EQUALS″ 10 MOLP AL//2O//3.